gearing a madrat with 4600kv and 6000kv
 

hi can anybody help me out with gearing my car its got a 78spur gear i need to use the 6000kv 5.5turnand 4600kv to pull the madrat as it weights alot 1800grams with a alloy shock tower and bumper .;)

The weight of the car is irrelevant. Scale weight to power even with the "weaker" motor will still be alot more than a bugati veyron. The purpose of the weight is to make the car more stable in the bends.
My zx5 4WD weighs 1887g and has a x11 5.5 that is too fast indoors. For racing put the slower motor in and leave it there until it dies. For bashing put in whatever you want.

well what the gearing then for 5.5turn and 4600kv with a 78 spur gear its for bashing till after the winter till i start racing seen as the club as closed for the winter